# File lib/phusion_passenger/platform_info/apache.rb, line 67
        def self.httpd
                if env_defined?('HTTPD')
                        return ENV['HTTPD']
                elsif apxs2.nil?
                        ["apache2", "httpd2", "apache", "httpd"].each do |name|
                                command = find_command(name)
                                if !command.nil?
                                        return command
                                end
                        end
                        return nil
                else
                        return find_apache2_executable(`#{apxs2} -q TARGET`.strip)
                end
        end